Fig. 4

Comparison of LDL-C equations by regression error characteristic plots. Regression Error Characteristic curves for LDL-C equations, using BQ LDL-C as the reference method, for all the validation data (A), LDL-C ≤ 100 mg/dL (B), TG ≥ 175 mg/dL (C), or for TG ≥ 400 mg/dL (D) for F LDL-C (orange line), eM LDL-C (red line), S LDL-C (blue line), and eS-LDL-C (green line) equations. Area-under-the-curve (AUC) is calculated for each equation to provide a single integrated measure of test accuracy. Number of samples for each equation is indicated next to AUC score